module.exports = app => {
    const express = require('express')
    const jwt = require('jsonwebtoken')
    const AdminUser = require('../../models/AdminUser')
    const assert = require('http-assert')
    const router = express.Router({
        mergeParams: true
    })
    //创建资源
    router.post('/', async (req, res) => {
        const model = await req.Model.create(req.body)
        res.send(model)
    })
    //更新资源
    router.put('/:id', async (req, res) => {
        const model = await req.Model.findByIdAndUpdate(req.params.id, req.body)
        res.send(model)
    })
    //删除资源
    router.delete('/:id', async (req, res) => {
        await req.Model.findByIdAndDelete(req.params.id, req.body)
        res.send({
            success: true
        })
    })
    //资源列表
    router.get('/', async (req, res) => {

        // return res.send({ modelName })
        const queryOptions = {}
        if (req.Model.modelName === 'Category') {
            queryOptions.populate = 'parent'
        }
        const items = await req.Model.find().setOptions(queryOptions).limit()
        //return res.send({ items })
        res.send(items)
    })
    //资源详情
    router.get('/:id', async (req, res) => {
        const model = await req.Model.findById(req.params.id)
        res.send(model)
    })


    //登录校验中间件
    const authMiddleware = require('../../middleware/auth')
    //资源校验
    const resourceMiddleware = require('../../middleware/resource')

    app.use('/admin/api/rest/:resource', authMiddleware(), resourceMiddleware(), router)

    //静态资源获取
    const multer = require('multer')
    const upload = multer({ dest: __dirname + '/../../uploads' })
    app.post('/admin/api/upload', authMiddleware(), upload.single('file'), async (req, res) => {
        const file = req.file
        file.url = `http://localhost:3000/uploads/${file.filename}`

        res.send(file)
    })
    //登录校验
    app.post('/admin/api/login', async (req, res) => {
        const { username, password } = req.body
        //1.根据用户名找用户

        const user = await AdminUser.findOne({ username }).select('+password')
        assert(user, 422, "用户不存在")
        // if (!user) {
        //     return res.status(422).send({
        //         message: '用户不存在'
        //     })
        // }
        const isValid = require('bcryptjs').compareSync(password, user.password)
        assert(isValid, 422, "用户名或密码不正确")
        // if (!isValid) {
        //     return res.status(422).send({
        //         message: '密码错误'
        //     })
        // }
        //2.校验密码
        //3.返回token

        const token = jwt.sign({ id: user._id }, app.get('secret'))
        res.send({ token })

    })


    //错误处理
    app.use(async (err, req, res, next) => {
        // console.log(err);
        res.status(err.statusCode || 500).send({
            message: err.message
        })
    })
}